Difference between revisions of "Soil moisture - capacitance (TMS)"
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Other related web sites: | Other related web sites: | ||
*[http://www.tomst.com/site/de/tms.html TOMST®] | *[http://www.tomst.com/site/de/tms.html TOMST®] | ||
| + | *[http://www.tomst.com/tms/Calibration-set-TMS3.pdf TMS calibration set for typical soils] | ||
==References== | ==References== | ||
Revision as of 09:23, 21 May 2014
Parameter to be measured:
Soil moisture, soil, surface and air temperature
Method:
Capacitance
Equipment:
- temperature measurement with sensor MAXIM/DALLAS Semiconductor DS7505U+, with resolution of 0.0625 °C and with accuracy of ±0.5 °C
- soil moisture measurement based on capacity technique in the frequency of 100-200MHz
- integrated data loggers of 32MBit
Advantages:
- stand alone system
- cheap
- Easy to install
Disadvantages:
- Calibration needed
- Small measurement volume compared to other sensors
- Actual Software is less comfortable
- Connection between readout unit and probe can be improoved
What to watch out for:
- Careful installation, air gaps have a sustainable influence on the measurement compared to other sensors because of the small measurement volume
Problems/Questions:
Price:
80 € (2013, Europe)
Links
Projects that used the above equipment:
Other related web sites: